PHP 手机归属地查询 api

<?php
header("Content-Type:text/html;charset=utf-8");
if (isset($_GET['number'])) {
$url = 'http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx/getMobileCodeInfo';
$number = $_GET['number'];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, "mobileCode={$number}&userId=");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = curl_exec($ch);
curl_close($ch);
$data = simplexml_load_string($data);
if (strpos($data, 'http://')) {
echo '手机号码格式错误!';
} else {
echo $data;
}
}
?>

<form action="mobile.php" method="get">
手机号: <input type="text" name="number" /> &nbsp; <input type="submit" value="提交" />
</form>